基于多体动力学活塞摩擦副润滑研究
发布时间：2019-05-23 16:19
【摘要】：活塞、活塞环与缸套之间是内燃机的主要摩擦副之一,随着发动机的长期运转,活塞环将发生变形和磨损,气缸间隙也随着增大,从而严重影响内燃机整机的工作性能。因此,对内燃机活塞摩擦副的润滑性能进行研究,确定其工作中的滑油消耗量,对改善内燃机的动力性和经济性、延长整机寿命,具有十分重大的意义。 基于活塞、活塞环与缸套之间相互作用、相互影响,考虑到船舶柴油机活塞摩擦副润滑计算过程将不同于单一的部件,必须考虑部件之间的相互影响。本文在对船舶主机活塞摩擦副润滑的计算中建立摩擦副的整体多体动力学模型,得出了计算结果与理论比较吻合。分析了滑油蒸发量、滑油累积量、滑油流量、缸套间隙、窜油量等参数对润滑特性的影响。 该多体动力学分析模型分析方法为船舶柴油机活塞摩擦副润滑特性的分析提供了一种有效的研究方法,实现活塞摩擦副快速和高效的优化设计。
[Abstract]:The piston, the piston ring and the cylinder sleeve are one of the main friction pairs of the internal combustion engine, and with the long-term operation of the engine, the piston ring will be deformed and worn, and the clearance of the air cylinder is also increased, so that the working performance of the whole engine of the internal combustion engine is seriously affected. Therefore, the lubricating property of the piston friction pair of the internal combustion engine can be researched, the lubricating oil consumption in the operation is determined, the dynamic property and the economy of the internal combustion engine are improved, and the service life of the whole machine is prolonged and has great significance. based on the interaction between the piston, the piston ring and the cylinder sleeve, the interaction between the piston ring and the cylinder sleeve is influenced, In this paper, the integral multi-body dynamics model of the friction pair is established in the calculation of the friction pair lubrication of the piston of the main engine of the ship, and the calculation results and the theoretical comparison are obtained. The lubrication characteristics of the oil evaporation, the oil accumulation, the oil flow, the clearance of the cylinder liner and the oil displacement are analyzed. The analysis method of the multi-body dynamic analysis model provides an effective method for the analysis of the friction pair lubrication characteristics of the piston of a marine diesel engine, and realizes the rapid and high efficiency of the piston friction pair.
【学位授予单位】：大连理工大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：U664.121;TH117
本文编号：2484037
[Abstract]:The piston, the piston ring and the cylinder sleeve are one of the main friction pairs of the internal combustion engine, and with the long-term operation of the engine, the piston ring will be deformed and worn, and the clearance of the air cylinder is also increased, so that the working performance of the whole engine of the internal combustion engine is seriously affected. Therefore, the lubricating property of the piston friction pair of the internal combustion engine can be researched, the lubricating oil consumption in the operation is determined, the dynamic property and the economy of the internal combustion engine are improved, and the service life of the whole machine is prolonged and has great significance. based on the interaction between the piston, the piston ring and the cylinder sleeve, the interaction between the piston ring and the cylinder sleeve is influenced, In this paper, the integral multi-body dynamics model of the friction pair is established in the calculation of the friction pair lubrication of the piston of the main engine of the ship, and the calculation results and the theoretical comparison are obtained. The lubrication characteristics of the oil evaporation, the oil accumulation, the oil flow, the clearance of the cylinder liner and the oil displacement are analyzed. The analysis method of the multi-body dynamic analysis model provides an effective method for the analysis of the friction pair lubrication characteristics of the piston of a marine diesel engine, and realizes the rapid and high efficiency of the piston friction pair.
【学位授予单位】：大连理工大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：U664.121;TH117
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